Math (Sum, Average, Differential) Modules

lifetime warranty
  • Lifetime Warranty on API Modules
  • LoopTracker® I/O LEDs
  • Hot-Swappable Plug-In Design
  • Zero and Span Output Calibration
  • Push to Test Output
  • Full I/O/Power Isolation
Click on model numbers below
for data sheets
Literature and Links

API product brochure

See all DC input transmitters

Options & accessories

Cross reference
Reference Info

LoopTracker and Output Test
Sink vs Source
RFI/EMI

Applications

Phase separator water level control
Milling machine feed
How to Order
  1. Select a model
  2. See data sheet for ordering info and power options
  3. See Price list
  4. 2-5 day typical lead time (USA customers)
  5. To place your order
Model Input/Output Features Product
DC to DC Signal Conditioners with
High/Low Select Functions

DIN Style

APD44xx series

APD 44H2: High select from 2 inputs
APD 44H3: High select from 3 inputs
APD 44H4: High select from 4 inputs
APD 44L2: Low select from 2 inputs
APD 44L3: Low select from 3 inputs
APD 44L4: Low select from 4 inputs

Specify input ranges
Factory configured
Input negative is common
Voltage: 0-50 mVDC to 0-10 VDC
Bipolar voltage: ±25 mVDC to ±10 VDC
Current: 0-1 mADC to 0-20 mADC
Bipolar current: ±0.5 mADC to ±20 mADC

Specify output range
Factory configured
0-1 V to ±10 V
0-2 mA to 0-20 mA, 4-20 mA
  • Output LoopTracker LED
  • Output test button
  • I/O/power isolation
  • Inputs share common ground
  • Hot-swappable design
  • 85-265 VAC, 60-300 VDC power
  • D option for 9-30VDC/10-32VAC power
APD 44HL New!UL approved
APD 44xx Hi/Lo Select series
DC to DC Signal Conditioners with
Math Functions

Plug In Style

API 4400 G - API 4408 G

API 4400 G: (A+B+C+D)/4
API 4401 G: (A+B+C)/3
API 4402 G: (A+B)/2
API 4403 G: (A+B+C–D)/3
API 4404 G: (A+B–C–D)/2
API 4405 G:  A–B–C–D
API 4406 G: (A+B–C)/2
API 4407 G:  A–B–C
API 4408 G:  A–B

Specify input ranges
Factory configured
Input negative is common
0-100 mV to 0-10 V
±100 mV to ±10 V
0-1 mA to 0-20 mA, 4-20 mA

Specify output range
Factory configured
0-1 V to ±10 V
0-2 mA to 0-20 mA, 4-20 mA
  • Hot-swappable plug-in design
  • Direct replacements for Action AP 4400 series
  • I/O LoopTracker LEDs
  • Output test button
  • Full I/O/power isolation
  • Uses API-011 11-pin socket
  • 115 VAC powered
  • A230 option for 230 VAC
  • P option for 85-265 VAC, 60-300 VDC power
  • D option for 9-30 VDC power



Api 4400G
API 4400 G to API 4408 G
S315 and S315-IP66
4 Digit 4-20 mA Loop Powered Display

1/8 DIN

S315 and S315-IP66 datasheet

S315 and S315-IP66 installation
Loop Powered Display
Input: 4-20 mA
Display: 4 digit red LED

  • 1/8 DIN panel mount or IP66 housing
  • Scalable 4 digit display

CE logo  new!
S315
S315